Subtract 40/21 from 45/9
1st number: 5 0/9, 2nd number: 1 19/21
45/9 - 40/21 is 65/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 21 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 9 × 7 = 63,
45/9 = 45 × 7/9 × 7 = 315/63 - Likewise, for the 2nd fraction, since 21 × 3 = 63,
40/21 = 40 × 3/21 × 3 = 120/63 - Subtract the two like fractions:
315/63 - 120/63 = 315 - 120/63 = 195/63 - After reducing the fraction, the answer is 65/21
- In mixed form: 32/21
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